- if (args->minorversion && args->opcnt > 0) {
- struct nfsd4_op *op = &args->ops[0];
- return (op->status == nfserr_op_illegal) ||
- (nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP);
- }
- return true;
+ struct nfsd4_op *op = &args->ops[0];
+
+ /* These ordering requirements don't apply to NFSv4.0: */
+ if (args->minorversion == 0)
+ return nfs_ok;
+ /* This is weird, but OK, not our problem: */
+ if (args->opcnt == 0)
+ return nfs_ok;
+ if (op->status == nfserr_op_illegal)
+ return nfs_ok;
+ if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP))
+ return nfserr_op_not_in_session;
+ if (op->opnum == OP_SEQUENCE)
+ return nfs_ok;
+ if (args->opcnt != 1)
+ return nfserr_not_only_op;
+ return nfs_ok;